如何替换MongoDB驱动程序中的所有内容？厕所＃

Question

我的列表看起来像：

[0] Student - GroupId: 1, Subject: "History"
[1] Student - GroupId: 1, Subject: "Math"
[2] Student - GroupId: 1, Subject: "Art"
[3] Student - GroupId: 2, Subject: "Spanish"
[4] Student - GroupId: 2, Subject: "Gym"
[5] Student - GroupId: 2, Subject: "English"
[6] Student - GroupId: 3, Subject: "Science"
[7] Student - GroupId: 3, Subject: "Science"
[8] Student - GroupId: 3, Subject: "Reading"

类的结构如下：

public class Student 
{
  public int GroupId { get; set; }
  public string Subject { get; set; }
}

使用我的Replace方法，我传递的是GroupId。对于传入的GroupId，我想用新学生替换所有学生实例。

现在，我的替换没有做任何事情。在我尝试替换之前和之后，我检查了收集，并且列表是相同的。我对MongoDriver不太熟悉，但它似乎没有一个ReplaceMany？这是我的尝试：

 public static void ReplaceStudents(int GroupId, IMongoDatabase Database)
    {
        IMongoCollection<Node> collection = Database.GetCollection<Student>("Students");
        List<Student> studentObjects= collection.Find(s => true).ToList();

        List<Student> before = collection.Find(s => true).ToList();

        var filter = Builders<Student>.Filter.Eq(n => n.GroupId, GroupId);
        collection.ReplaceOneAsync(filter, new Student());

        List<Student> after = collection.Find(s => true).ToList();
}

调用方法时：

ReplaceStudents(1, Database);